4. Practice.
Look at how you use the expressions for giving warnings that appear in the dialogue.
| Look out! Watch out! Be careful!  | 
              + explanation | 
| Be careful Mind  | 
              + you don't + where/what/who/how  | 
            
| Be careful | + preposition (with/on/of/etc.) + (not) to + infinitive  | 
            
| Mind | + noun | 
		    Write one or two words in each gap to complete the sentences.